*54 foot lightweight transmission line for 20 meters
*model 300 ohm to 50 ohm matching network
*model transmission line interaction with matching networks

*300 to 50 ohm matching section 
*Note that we are actually modeling the 
*matching section as an unbalanced transmission line
*
BLK
CAB 1 2 Z=300 V=0.80 P=41.5IN C1=.115837 C2=.038922
CAP 2 0 C=75PF
 MATCHER:2POR 1 2
END

*Find a good length for a "transparent" feedline
BLK
matcher 1 20
CAB 20 22 Z=300 V=0.80 P=566in C1=.105641 C2=.022346
matcher 3 22
trans:2por 1 3
end

*This length has a much narrower SWR bandwidth
BLK
matcher 1 20
CAB 20 22 Z=300 V=0.80 P=370in C1=.105641 C2=.022346
matcher 3 22
tuned:2por 1 3
end

freq
13mhz 14mhz 15mhz
step 13mhz 15mhz .02mhz
end
opt
trans ms11 .1 lt
end
